6. A 12 year old girl has mental retardation, ataxia, and a history of seizures. She does not speak but engages in frequent and excessive laughter. Cytogenetic analysis shows a deletion involving 15[del(15)(q11;q13). Genetic analysis in this patients family and in several other families with same syndrome shows that affected family members uniformly inherit the chromosome 15 with deletion from their mothers(rather than from their fathers). Tjis phenomenon is best explained by which of the following mechanisms? (A) codominance (B) Fragile sites (C) Genomic imprinting (D) Mitochondrial inheritance (E) X-linked inheritance
6. A 12 year old girl has mental retardation, ataxia, and a history of seizures. She does not speak but engages in frequent and excessive laughter. Cytogenetic analysis shows a deletion involving 15[del(15)(q11;q13). Genetic analysis in this patients family and in several other families with same syndrome shows that affected family members uniformly inherit the chromosome 15 with deletion from their mothers(rather than from their fathers). Tjis phenomenon is best explained by which of the following mechanisms? (A) codominance (B) Fragile sites (C) Genomic imprinting (D) Mitochondrial inheritance (E) X-linked inheritance
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter13: Genes, Chromosomes, And Human Genetics
Section: Chapter Questions
Problem 5TYK
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6. A 12 year old girl has mental retardation, ataxia, and a history of seizures. She does not speak but engages in frequent and excessive laughter. Cytogenetic analysis shows a deletion involving 15[del(15)(q11;q13). Genetic analysis in this patients family and in several other families with same syndrome shows that affected family members uniformly inherit the chromosome 15 with deletion from their mothers(rather than from their fathers). Tjis phenomenon is best explained by which of the following mechanisms?
(A) codominance
(B) Fragile sites
(C) Genomic imprinting
(D) Mitochondrial inheritance
(E) X-linked inheritance
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